Possible Clues:

• Came out of casino - smashed and disorientated having had nose broken by 18 down
• Came out of casino - smashed and confused with nose broken by 13 across (4,3'1,5)
• Prancing horse on stilts came a cropper after a flutter
• Got something off your chest perhaps, as all bets were off (4,3'1,5)
• Flamed out at a casino, say
• Blew a fortune
• Department manager loses one's top in the words of a loser (4,3'1,5)
• Got something off your chest as all bets were off (4,3'1,5)
• Gambled poorly